Brake jaw or fork.



.G. W. KELLY.

BRAKE JAW 0R FORK. APPLICATION FILED SPT- 20. I9I5.

1,165,514. Patent-ed Dec. 28, 1915.

23 /V P L j I I i (I 1T /2 enoaen w. KELLY, or ELIZABETH, new masnv.

:enaxn Jaw on some ii Specification of Letters Patent.

Patented Dec. 28, 1915.

Application filed'September 20, 1915. Serial 1T0.-51,5 53.

To all whom it may concern: I

Be it known that I, Gnoncn KELLY, a citizen of the United States, and a resident of Elizabeth, in the countyfi f Union and State of NewJersey, have invented certain new and useful Improvements in Brake Jaws or Forks, of which the following is a specification.

The invention. pertains more partlcularly to improvements in brake-forks or jaws such as are used on street and railway cars, and the like, in connection with the brake-beams and rods.

One purpose of the invention is to provide a special rod connection permitting of the convenient use of a malleable jaw and.

a rod secured thereto in accordance with the special features of my invention whereby the rod and jaw may be very conveniently and permanently connected together and held against either axial or longitudinal movement with relation to each other.

In accordance with my invention I provide a malleable or other metal jaw having a body portion and jaw members, and within said body portion I provide an opening whose walls are tapered and countersunk laterally at opposite sides and within this opening I apply the end of a rod, while in a heated state, and upset said end of the rod so that it fills said opening and cannot be withdrawn therefrom or rotate therein, leaving the rod at the outer end of the bodyportion of the jaw in substantially its initial condition, my purpose being to obviate the formation of a shoulder on the rod at the outer end of the body portion of the jaw and to avoid the inconvenience and expense of forming such shoulder.

My invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which:

Figure 1 is a longitudinal section througha grip-die and jaw held therein, the connecting rod being shown as having its hot end extended through the opening in the body portion of the jaw, and the end-portion of a plunger-tool of a forging machine being v illustrated preparatory to passing between the members of the jaw and upsetting the end of the rod extending through the opening in the body portion of the jaw; Fig. 2 is a longitudinal section, partly broken away, taken on the dotted line 2-2 of Fig.

3, through the jaw and rod shown in their connected state; Fig. 3 is a longitudinal secof the jaw and a portion of its connectin rod.

In the drawings 10 designates the fork or jaw, 11 the rod of wrought metal secured thereto, 12 a grip-die of forging machine of usual character and therefore not shown, and 13 a plunger-tool of said machine.

The fork or jaw 10 comprises integrally, a body-portion 14 and parallel correspondmg jaw-members 15 extending therefrom and longitudinally therewith and formed with alined holes 16 for the customary bolt or pivot pin, not shown. The body 14 of the fork or jaw 10 has extending through it a longitudinal hole 17 of special formation and the adjacent end of the rod 11 has thereon a head 18 formed within and filling said hole and permanently connecting the fork or jaw and said rod together, and the essence of my invention resides more especially,in the said formations securing the fork or jaw and rod together and which are very advantageous. The hole 17 extending through the body 14 of the fork or jaw is substantially circular. at its outer end and snugly conforms to the cross-section or diameter of the rod 11, and inwardly from its outer end the walls of said hole 17 diverge, the opposite walls 19 having a gradual and continuous divergence to the mner end of the hole 17 between the facing sides of the jaw-members 15, as shown in Fig. 3, and the other opposite walls 20 of said hole having a more abrupt divergence nearly to the inner end thereof and then converging toward each other on curved lines, as at'21, Fig. 2, and then again diverging, as at 22, whereat transverse ribs or lugs 23 "are formed at opposite sides of the inner end of the hole 17 and overhang the same, leaving said hole with two opposite tapered sides and two opposite tapered and countersunk sides at whose inner end edges are the said transverse ribs or lugs 23. The ribs or lugs 23 at the inner end edges of the sides 19 of the hole 17 are connected by integral portions 24 of the fork or jaw, as shown in Figs. 3 and 4.

propriate dimensions and its inner end' which is to be securedto the fork or jaw 10 is heated to the forging or upsetting stage and inserted through the hole 17 and rojected far enough beyond the same to a 0rd sufficient metal for the formation of the head 18, and thereafter said end of said rod is upset to entirely fill the hole 17, the head 18 thus being formed and engaging all the wall surfaces of said hole 17 including the diverging surfaces extending upon the ribs or lugs 23.

I do not confine my invention to anyspe-. cial means for upsetting the end of the rod 11 within the hole 17 of the fork or jaw but I recommend that this operation be 'erformed on a forging machine, with the ork or jaw and rod held in a grip-die 12 in position to be acted on by a plunger-tool 13,

said tool being adapted to pass between the j aw-members 15 and directly engage the heated end of the rod 11.

When the end of the rod 11 has been upset to fill the hole 17 and form the head 18, it is obvious that due to the special formation of said hole and the resence of said head therein, the fork or aw and rod cannot be pulled apart or separated from each other. The hole'17 inwardly from its outer end is of oval formation or of greater width across I one diameter than across the other diameter and this results in the rod 11 and fork or jaw 10 being held against turning action one upon the other. The connection described of the rod 11 with the fork or jaw 10 is of very great strength and efficiency and one which may be produced with entire convenience and in athoroughly practical manner.

I may call attention to the fact that in carrying out my invention, there being no shoulder required on the rod 11 at the outer end of the hole 17, the die 12 may closely engage the entire outer surfaces of the body portion 14 and adjacent surfaces of the j awmembers 15 and .thus efliciently back and support the fork or jaw during the upsetting of the end of the rod 11 on a forging machine, which upsetting may be performed by one o eration or stroke of the machine.

What claim as my invention and desire to secure by Letters Patent, is j 1. A brake fork or jaw and a rod, said fork comprising a body portion and jaw members integral therewith and said body portion having extending through it a longitudinal hole whose walls intermediate their end portions are tapered and countersunk laterally, and said rod at one end being upset within and filling said hole.

2. A brake fork or jaw and a rod, said fork comprising a body portion and jaw members mtegral therewith and said body portion having extending through it a longitudinal hole whose walls intermediate their end portions are tapered and countersunk laterally, and said rod at one end being u set within and filling said hole, and said body portion at opposite sides of the inner end of said hole having integrally therewith ribs or lugs which overhang said hole and upon the acing edges of which portions of the u set end of the rod extend.

3. brake fork or jaw and a rod, said fork comprising a body portion and jaw members integral therewith and said body 'portion having extending through it a longitudinal hole which is greater in one cross diameter than in the other and has at two opposite sides substantially continuous slightly diverging walls and at its other opposite sides more abruptly diverfging walls continued by converging wall sur aces formin lateral countersunk portions within said ho e, and said rodat one end being upset within and filling said hole.

4. A brake fork or jaw and a rod, said I fork comprising a body portion and jaw members integral therewith and said body portion having extending through it a longitudinal hole which is greater in one cross diameter than in the other and has at two opposite sides substantially. continuous slightly diverging walls and at its other opposite sides more abruptly'diverging walls continued by converging wall surfaces forming lateral countersunk portions within said hole, and said rod atom and being upset within and filling said'hole, and said body portion at opposite sides of the inner end of said hole having integrally therewith ribs or lugs which overhang said hole and upon the facing edges of which portions of the upset end of the rod extend.

5. A brake fork or jaw and a rod, said fork comprising a bodyportion' and jaw members integral therewith and said body portion having extending through it a longitudinal hole whose walls intermediate their end portions are tapered'and countersunk laterally, and said rod at one end being up set within and filling said hole, and said hole inwardly from its outer end being greater in one cross diameter than in the other.

6. A brake fork or jaw and a rod, said fork comprising a. body portion and jaw members lntegral therewith and said'body portion having extending through it a longitudinal hole having opposite walls which present tapered and laterally countersunk set within and filling said hole, and said body Union, and State of New Jersey, this 16th portion at opposite sides of the inner end day of September, A. D. 1915.

of said hole having integrally therewith ribs or lugs which overhang said hole and EORGE KELLY 5 upon the facing edges of which portions of Witnesses:

the upset end of the rod extend. CHARLES H; WATERMAN,

Signed at Elizabeth, in the county of MAHLON HAMLIN. 

